Testes do Guru3D:
Preliminary conclusion
Given what I am currently seeing, desktop users and PC gamers should not be worried about significant performance drops. Most test results do show a negative effect on performance, but we're really talking in a realm of 2% differentials here. The file IO tests didn't worry me either, and we used the fastest consumer NVME SSD on the globe to be able to see a bigger effect when measured. We did see a bit of a drop off in 4K performance, mostly reads up-to 3%. That's the worst I have been able to find out of all tests. Other than that you are looking at 1% maybe 2% differentials that could even be tagged as your typical statistical anomalies.
Now my remark here needs to include this, there probably will be some firmware updates and perhaps new patches for all protections to kick in, accumulated and activated these all can have an effect on performance. If that turns out to be the case, we'll have to re-do and revisit all tests. Currently, however, if you have a reasonably modern PC and IF this patch is all there is to it, you'll be hard-pressed to notice any difference, if at all. Again I would like to re-iterate that the effect on older dual and quad-core processors with a lower frequency could be far worse, the truth here is that I do not know the effect on that just yet. But on your average modern PC, this doesn't seem to be that worrying at all. That said - I'll need to test older processors, if there's a need performance differences wise, we'll certainly report back on that.
This article is aimed at gamers and Windows 10 desktop users, the results in the server segment might look and be rather different. In the end, please do get yourself patched up okay?
http://www.guru3d.com/articles_pages/windows_vulnerability_cpu_meltdown_patch_benchmarked,1.html
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Pra mim pareceu tranquilo. Em games, a perda foi de cerca de 2% e mesmo assim só apareceu nos testes em 720p que forçaram um gargalo na CPU.
Esta CPU deles usa arquitetura Haswell. Se com Skylake não for pior tá de boas pra mim.